Maksangmaka

Under orders from his police chief, Detective Yoo Ji-Han infiltrates the powerful Hwa Ryeon Seung syndicate. Unfortunately, he gets found out by Han Do-Kyung, the organization's second-in-command, who offers to keep Ji-Han's identity a secret if he becomes Do-Kyung's dog. Amidst the ensuing humiliation, Ji-Han begins to feel inexplicably drawn toward Do-Kyung...

(Source: Lezhin US)